It has extremely long range (longer than Nerd Cat and even Assassinlan Pasalan) and deals very high damage. However, it has very low health and has slow attack rate and movement speed. Oddly enough, this enemy is Metal, probably to balance out it's extremely low health.
Due to its low health and massive damage and range, spawn non-stop fast attackers like Mr. or Cow Cat and, after multiple attacks, the boss will die and you will win the battle. Alternatively, critical hitters can be timed during its time between attacks in order to get some hits off. A good thing to note is that basically any Critical Hit from any critter will kill it instantly, due to its low 99 HP.